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Keystone (architecture) A keystone (or capstone) is the wedge-shaped stone at the apex of a masonry arch or typically round-shaped one at the apex of a vault. In both cases it is the final piece placed during construction and locks all the stones into position, allowing the arch or vault to bear weight. [1][2][3] In arches and vaults (such as ...
A voussoir (/ vuˈswɑːr /) is a wedge-shaped element, typically a stone, which is used in building an arch or vault. [1] Although each unit in an arch or vault is a voussoir, two units are of distinct functional importance: the keystone and the springer. The keystone is the centre stone or masonry unit at the apex of an arch.
Keystone, the top block in an arch. Portion of the arch around the keystone (including the keystone itself), with no precisely defined boundary, is called a crown; Voussoir (a wedge-like construction block). A rowlock arch is formed by multiple concentric layers of voussoirs. [13] Extrados (an external surface of the arch)
For the sake of comparison, a semicircular arch with wedge-shaped voussoirs maintained by a central keystone (" true arch"). A corbel arch (or corbeled / corbelled arch) is an arch -like construction method that uses the architectural technique of corbeling to span a space or void in a structure, such as an entranceway in a wall or as the span ...
The method of creating structures using heavy timbers jointed by pegged mortise and tenon joints. Trabeated arch. A simple construction method using a lintel, header, or architrave as the horizontal member over a building void supported at its ends by two vertical columns, pillars, or posts. Tracery.
A cornerstone (or foundation stone or setting stone) is the first stone set in the construction of a masonry foundation. All other stones will be set in reference to this stone, thus determining the position of the entire structure. Over time a cornerstone became a ceremonial masonry stone, or replica, set in a prominent location on the outside ...
Two rows of voussoirs form the shape of the arch and are held in place by a keystone at the top. [1] Above the arch (in two concentric rows) there is an ornate Doric-inspired frieze of metopes with round shields and triglyphs in six vertical bands. Above this is another smaller voussoir arch between two pilasters making the height of the ...
Renaissance architecture is the European architecture of ... Brunelleschi was aware that a dome of enormous proportion could in fact be engineered without a keystone ...